Abstract: :
Purpose: To evaluate the morphological changes of ciliary bodyin eyes underwent diode laser transscleral cyclophotocoagulation(TSCPC).Methods: Five eyes of three patients with seriousglaucoma were involved in this study after the informed consent.TSCPC was performed using the G-probe connected to diode lasersystem (Oculight SLx, Iris Medical Instruments, CA). The laserapplications were delivered to three quarters of the circumferenceof the ciliary body. At each application, the duration and powerof the laser emission and whether audible pop sound was emittedor not were recorded. The patients were clinically followedup, including tonometry and ultrasound biomicroscopy (UBM),more than six months after TSCPC.Results: The findings ofUBM showed the disruption of ciliary body at the coagulatedsites accompanied with the pop sound, three days after TSCPC.Such a disruptive finding of the ciliary body was not observedat coagulated sites without the pop sound. The disruptive findingsdisappeared and normal morphology of the ciliary body was restoredby the four weeks after TSCPC. Six months after TSCPC, the ciliarybody was observed to be reduced in volume. The mean intraocularpressure was 31.1 +/- 7.9 (mean +/- SEM) mmHg before TSCPC and14.5 +/- 1.8 mmHg six months after that. In our cases, althoughpop sound was frequently accompanied with the treatment, nocomplications were observed except for floating inflammatorycells and bleeding in the anterior chamber during one or twoweeks just after TSCPC.Conclusions: Using UBM, we documentedthe disruptive findings of the ciliary body associated withpop sound in TSCPC. Even though pop sound was emitted in TSCPC,no serious complications occurred eventually. It is suggestedthat pop sound can be used as a reliable sigh to confirm theactual coagulation of the ciliary body.